Open Access

ARTICLE

A Peridynamic Approach for the Evaluation of Metal Ablation under High Temperature

by Hui Li^*, Liping Zhang, Yixiong Zhang, Xiaolong Fu, Xuejiao Shao, Juan Du

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610200, China

* Corresponding Author: Hui Li. Email:

(This article belongs to the Special Issue: Peridynamics and its Current Progress)

Computer Modeling in Engineering & Sciences 2023, 134(3), 1997-2019. https://doi.org/10.32604/cmes.2022.020792

Received 13 December 2021; Accepted 03 May 2022; Issue published 20 September 2022

Abstract

In this paper, the evaluations of metal ablation processes under high temperature, i.e., the Al plate ablated by a laser and a heat carrier and the reactor pressure vessel ablated by a core melt, are studied by a novel peridynamic method. Above all, the peridynamic formulation for the heat conduction problem is obtained by Taylor’s expansion technique. Then, a simple and efficient moving boundary model in the peridynamic framework is proposed to handle the variable geometries, in which the ablated states of material points are described by an additional scalar field. Next, due to the automatic non-interpenetration properties of peridynamic method, a contact algorithm is established to determine the contact relationship between the ablated system and the additional heat carrier. In addition, the corresponding computational procedure is listed in detail. Finally, several numerical examples are carried out and the results verify the validity and accuracy of the present method.

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